The meaning of the P0033 Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 0 for Fuel And Air Metering. 3 for Cruise Control Servo Indicates Low and 3 for Transmission Control Module Reprogrammable Memory. The P0033 engine code looks a kind of powertrain problem and without expert automobile engineer, no one should try to fix the problem. While fuel economy was amplified, acceleration was extremely negotiated, and the loss of engine vacuum led to a hazardous loss of braking assist when the P0033 code system was in 4 cylinders mode.